- 根目录:
- drivers
- gpu
- drm
- nouveau
- core
- subdev
- therm
- base.c
/*
* Copyright 2012 The Nouveau community
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Martin Peres
*/
#include <core/object.h>
#include <core/device.h>
#include <subdev/bios.h>
#include "priv.h"
static int
nouveau_therm_update_trip(struct nouveau_therm *therm)
{
struct nouveau_therm_priv *priv = (void *)therm;
struct nouveau_therm_trip_point *trip = priv->fan->bios.trip,
*cur_trip = NULL,
*last_trip = priv->last_trip;
u8 temp = therm->temp_get(therm);
u16 duty, i;
/* look for the trip point corresponding to the current temperature */
cur_trip = NULL;
for (i = 0; i < priv->fan->bios.nr_fan_trip; i++) {
if (temp >= trip[i].temp)
cur_trip = &trip[i];
}
/* account for the hysteresis cycle */
if (last_trip && temp <= (last_trip->temp) &&
temp > (last_trip->temp - last_trip->hysteresis))
cur_trip = last_trip;
if (cur_trip) {
duty = cur_trip->fan_duty;
priv->last_trip = cur_trip;
} else {
duty = 0;
priv->last_trip = NULL;
}
return duty;
}
static int
nouveau_therm_update_linear(struct nouveau_therm *therm)
{
struct nouveau_therm_priv *priv = (void *)therm;
u8 linear_min_temp = priv->fan->bios.linear_min_temp;
u8 linear_max_temp = priv->fan->bios.linear_max_temp;
u8 temp = therm->temp_get(therm);
u16 duty;
/* handle the non-linear part first */
if (temp < linear_min_temp)
return priv->fan->bios.min_duty;
else if (temp > linear_max_temp)
return priv->fan->bios.max_duty;
/* we are in the linear zone */
duty = (temp - linear_min_temp);
duty *= (priv->fan->bios.max_duty - priv->fan->bios.min_duty);
duty /= (linear_max_temp - linear_min_temp);
duty += priv->fan->bios.min_duty;
return duty;
}
static void
nouveau_therm_update(struct nouveau_therm *therm, int mode)
{
struct nouveau_timer *ptimer = nouveau_timer(therm);
struct nouveau_therm_priv *priv = (void *)therm;
unsigned long flags;
bool immd = true;
bool poll = true;
int duty = -1;
spin_lock_irqsave(&priv->lock, flags);
if (mode < 0)
mode = priv->mode;
priv->mode = mode;
switch (mode) {
case NOUVEAU_THERM_CTRL_MANUAL:
ptimer->alarm_cancel(ptimer, &priv->alarm);
duty = nouveau_therm_fan_get(therm);
if (duty < 0)
duty = 100;
poll = false;
break;
case NOUVEAU_THERM_CTRL_AUTO:
if (priv->fan->bios.nr_fan_trip) {
duty = nouveau_therm_update_trip(therm);
} else
if (priv->fan->bios.linear_min_temp ||
priv->fan->bios.linear_max_temp) {
duty = nouveau_therm_update_linear(therm);
} else {
if (priv->cstate)
duty = priv->cstate;
poll = false;
}
immd = false;
break;
case NOUVEAU_THERM_CTRL_NONE:
default:
ptimer->alarm_cancel(ptimer, &priv->alarm);
poll = false;
}
if (list_empty(&priv->alarm.head) && poll)
ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
spin_unlock_irqrestore(&priv->lock, flags);
if (duty >= 0) {
nv_debug(therm, "FAN target request: %d%%\n", duty);
nouveau_therm_fan_set(therm, immd, duty);
}
}
int
nouveau_therm_cstate(struct nouveau_therm *ptherm, int fan, int dir)
{
struct nouveau_therm_priv *priv = (void *)ptherm;
if (!dir || (dir < 0 && fan < priv->cstate) ||
(dir > 0 && fan > priv->cstate)) {
nv_debug(ptherm, "default fan speed -> %d%%\n", fan);
priv->cstate = fan;
nouveau_therm_update(ptherm, -1);
}
return 0;
}
static void
nouveau_therm_alarm(struct nouveau_alarm *alarm)
{
struct nouveau_therm_priv *priv =
container_of(alarm, struct nouveau_therm_priv, alarm);
nouveau_therm_update(&priv->base, -1);
}
int
nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode)
{
struct nouveau_therm_priv *priv = (void *)therm;
struct nouveau_device *device = nv_device(therm);
static const char *name[] = {
"disabled",
"manual",
"automatic"
};
/* The default PPWR ucode on fermi interferes with fan management */
if ((mode >= ARRAY_SIZE(name)) ||
(mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0 &&
!nouveau_subdev(device, NVDEV_SUBDEV_PWR)))
return -EINVAL;
/* do not allow automatic fan management if the thermal sensor is
* not available */
if (priv->mode == NOUVEAU_THERM_CTRL_AUTO && therm->temp_get(therm) < 0)
return -EINVAL;
if (priv->mode == mode)
return 0;
nv_info(therm, "fan management: %s\n", name[mode]);
nouveau_therm_update(therm, mode);
return 0;
}
int
nouveau_therm_attr_get(struct nouveau_therm *therm,
enum nouveau_therm_attr_type type)
{
struct nouveau_therm_priv *priv = (void *)therm;
switch (type) {
case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
return priv->fan->bios.min_duty;
case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
return priv->fan->bios.max_duty;
case NOUVEAU_THERM_ATTR_FAN_MODE:
return priv->mode;
case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
return priv->bios_sensor.thrs_fan_boost.temp;
case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
return priv->bios_sensor.thrs_fan_boost.hysteresis;
case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
return priv->bios_sensor.thrs_down_clock.temp;
case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
return priv->bios_sensor.thrs_down_clock.hysteresis;
case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
return priv->bios_sensor.thrs_critical.temp;
case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
return priv->bios_sensor.thrs_critical.hysteresis;
case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
return priv->bios_sensor.thrs_shutdown.temp;
case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
return priv->bios_sensor.thrs_shutdown.hysteresis;
}
return -EINVAL;
}
int
nouveau_therm_attr_set(struct nouveau_therm *therm,
enum nouveau_therm_attr_type type, int value)
{
struct nouveau_therm_priv *priv = (void *)therm;
switch (type) {
case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
if (value < 0)
value = 0;
if (value > priv->fan->bios.max_duty)
value = priv->fan->bios.max_duty;
priv->fan->bios.min_duty = value;
return 0;
case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
if (value < 0)
value = 0;
if (value < priv->fan->bios.min_duty)
value = priv->fan->bios.min_duty;
priv->fan->bios.max_duty = value;
return 0;
case NOUVEAU_THERM_ATTR_FAN_MODE:
return nouveau_therm_fan_mode(therm, value);
case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
priv->bios_sensor.thrs_fan_boost.temp = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
priv->bios_sensor.thrs_fan_boost.hysteresis = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
priv->bios_sensor.thrs_down_clock.temp = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
priv->bios_sensor.thrs_down_clock.hysteresis = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
priv->bios_sensor.thrs_critical.temp = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
priv->bios_sensor.thrs_critical.hysteresis = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
priv->bios_sensor.thrs_shutdown.temp = value;
priv->sensor.program_alarms(therm);
return 0;
case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
priv->bios_sensor.thrs_shutdown.hysteresis = value;
priv->sensor.program_alarms(therm);
return 0;
}
return -EINVAL;
}
int
_nouveau_therm_init(struct nouveau_object *object)
{
struct nouveau_therm *therm = (void *)object;
struct nouveau_therm_priv *priv = (void *)therm;
int ret;
ret = nouveau_subdev_init(&therm->base);
if (ret)
return ret;
if (priv->suspend >= 0) {
/* restore the pwm value only when on manual or auto mode */
if (priv->suspend > 0)
nouveau_therm_fan_set(therm, true, priv->fan->percent);
nouveau_therm_fan_mode(therm, priv->suspend);
}
nouveau_therm_sensor_init(therm);
nouveau_therm_fan_init(therm);
return 0;
}
int
_nouveau_therm_fini(struct nouveau_object *object, bool suspend)
{
struct nouveau_therm *therm = (void *)object;
struct nouveau_therm_priv *priv = (void *)therm;
nouveau_therm_fan_fini(therm, suspend);
nouveau_therm_sensor_fini(therm, suspend);
if (suspend) {
priv->suspend = priv->mode;
priv->mode = NOUVEAU_THERM_CTRL_NONE;
}
return nouveau_subdev_fini(&therm->base, suspend);
}
int
nouveau_therm_create_(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass,
int length, void **pobject)
{
struct nouveau_therm_priv *priv;
int ret;
ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM",
"therm", length, pobject);
priv = *pobject;
if (ret)
return ret;
nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm);
spin_lock_init(&priv->lock);
spin_lock_init(&priv->sensor.alarm_program_lock);
priv->base.fan_get = nouveau_therm_fan_user_get;
priv->base.fan_set = nouveau_therm_fan_user_set;
priv->base.fan_sense = nouveau_therm_fan_sense;
priv->base.attr_get = nouveau_therm_attr_get;
priv->base.attr_set = nouveau_therm_attr_set;
priv->mode = priv->suspend = -1; /* undefined */
return 0;
}
int
nouveau_therm_preinit(struct nouveau_therm *therm)
{
nouveau_therm_sensor_ctor(therm);
nouveau_therm_ic_ctor(therm);
nouveau_therm_fan_ctor(therm);
nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
nouveau_therm_sensor_preinit(therm);
return 0;
}
void
_nouveau_therm_dtor(struct nouveau_object *object)
{
struct nouveau_therm_priv *priv = (void *)object;
kfree(priv->fan);
nouveau_subdev_destroy(&priv->base.base);
}